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This study investigated the effect of three instructional elements on achievement in computer-based mathematics instructions. The subjects were senior secondary school students who used four versions of computer-based instructions developed on compact disc to learn about volume of solid shapes. The four versions of the programme were (1) a full version that had the three instructional elements (2) a version without objective (3) a version without practice (4) a version without examples. Results indicated that the full package, which included objective, practice and examples, had significant effect on students′ achievement in the computer-based mathematics instructions. Furthermore, of the three elements, practice, had the most effect on the learners′ achievement. Implications of the findings on development of computer-based instructions are also discussed.

The Effect of Three Instructional Elements on Achievement in Computer-Based Mathematics Instructions of Senior Secondary School Students in Nigeria